update snooty.toml year constant (#219)

Author: ianf-mongodb

snooty.toml

@@ -184,7 +184,7 @@ copy = "©"
 # hardlink replace:: {0}/{1}'.format(conf.project.url, conf.git.branches.current)
 # branch replace:: ``{0}``'.format(conf.git.branches.current)
 ent-build = "MongoDB Enterprise"
-year = "2021"
+year = "2022"
 bi = "MongoDB Connector for BI"
 version = "{+version+}"